The Oregon Solar Energy Industries Association is a trade association founded in 1981 to promote clean, renewable, solar technologies. OSEIA works with industry leaders, academic scholars, legislators, government, and non-profit agencies to advocate for solar technologies and raise awareness of its potential to help secure an affordable, reliable, and clean energy future.

OSEIA supports a progressive legislative and regulatory structure that fosters the development of solar technologies, their residential and commercial development, and the potential for utility scale production.